The 3.0-liter Audi CGWA 3.0 TFSI engine was assembled at the concern’s factories from 2009 to 2013 and was installed on the fourth-generation all-wheel drive modification of the A8 model before restyling. This power unit was essentially a slightly updated version of the engine under the CAJA index.
The EA837 series includes: BDW, AUK, BDX, CAJA, CGWA, CGWB, CREC.
|Fuel system||direct injection|
|Power output, hp||290|
|Torque output, Nm||420|
|Cylinder block||aluminum V6|
|Block head||aluminum 24v|
|Cylinder bore, mm||84.5|
|Piston stroke, mm||89|
|Timing drive||4 chains|
|Phase regulator||on the intake shafts|
|Recommended engine oil||5W-30|
|Engine oil capacity, liter||6.5|
|Euro standards||EURO 5|
|Fuel consumption, L/100 km (for Audi A8 2011)
|Engine lifespan, km||~240 000|
The engine was installed on:
- Audi A8 D4 (4H) in 2010 – 2013.
Disadvantages of the Audi CGWA engine
- Most often, owners of A8 with such an engine complain about increased oil consumption.
- The reason is usually scuffing from catalyst crumbs that are drawn into the cylinders.
- Since there are no check valves for the cylinder head oil channels, the chains crack during a cold start.
- Another culprit for the noise of the timing chains here can be the wear of the hydraulic tensioner.
- The pump, high-pressure fuel pump have a low resource, and muffler corrugations often burn out.